ENTRY 22995 20211103 23052299500000001
SUBENT 22995001 20211103 23052299500100001
BIB 16 81 2299500100002
TITLE The 14-C(n,gamma) cross section between 10 keV 2299500100003
and 1 MeV 2299500100004
AUTHOR (R.Reifarth, M.Heil, C.Forssen, U.Besserer, A.Couture, 2299500100005
S.Dababneh, L.Doerr, J.Goerres, R.C.Haight,F.Kaeppeler,2299500100006
A.Mengoni, S.O'Brien, N.Patronis, R.Plag, R.S.Rundberg,2299500100007
M.Wiescher, J.B.Wilhelmy) 2299500100008
REFERENCE (J,PR/C,77,015804,2008) Main reference. New analysis, 2299500100009
Final results. 2299500100010
(R,INDC(GER)-0053,2021) Revised values of Karlsruhe 2299500100011
cross sections. 2299500100012
(C,2006CERN,,(223),200606) Re-analysis of prelim.data. 2299500100013
Paper number 223. 2299500100014
(J,NP/A,758,787,2005) Preliminary results 2299500100015
REL-REF (I,,A.Antilla+,J,NIM,147,501,1977) Experimental details2299500100016
and C-15 decay-data 2299500100017
(I,,H.Beer+,J,NIM/A,337,492,1994) Experimental details 2299500100018
(A,,H.Beer+,J,AJ,387,258,1992) Previous activation 2299500100019
result for Maxwell-averaged cross section with 2299500100020
kT=23.3 keV. Agrees, if new sample mass is taken into 2299500100021
account and a similar dead-time problem like during 2299500100022
this experiment is assumed. 2299500100023
INSTITUTE (2GERKFK) Forschungszentrum Karlsruhe, Institut fuer 2299500100024
Kernphysik, Germany. F.Kaeppeler, R.Plag, 2299500100025
S.Dababneh, M.Heil; 2299500100026
Forschungszentrum Karlsruhe, Tritiumlabor. L.Doerr, 2299500100027
U.Besserer. 2299500100028
(1USALAN) Los Alamos National Laboratory, Los Alamos, 2299500100029
New Mexico, USA. R.Reifarth, A.Couture, R.C.Height, 2299500100030
R.S.Rundberg, J.B.Wilhelmy. 2299500100031
(1USALRL) Lawrence Livermore National Laboratory, 2299500100032
Livermore, California, USA. C.Forssen, N.Patronis. 2299500100033
(2SWDCTH) Fundamental Physics, Chalmers University 2299500100034
of Technology, Goeteborg, Sweden. C.Forssen. 2299500100035
(1USANOT) University of Notre Dame, Physics Depart., 2299500100036
Notre Dame, Indiana, USA. S.O'Brien, J.Goerres, 2299500100037
M.Wiescher. 2299500100038
(2ZZZCER) CERN, CH-1211 Geneva 23, Switzerland. 2299500100039
A.Mengoni. 2299500100040
(2GRCIOA) Nuclear Physics Laboratory, Department of 2299500100041
Physics, The University of Ioannina, Ioannina, 2299500100042
Greece. N.Patronis. 2299500100043
FACILITY (VDG,2GERKFK) 3.7 MV Van de Graaff accelerator 2299500100044
ANALYSIS The main difference of this article data from that 2299500100045
of the preliminary in REFERENCE NP/A,758 is discovery 2299500100046
of the huge dead time effect during the experiment. 2299500100047
METHOD (ACTIV) Cyclic activation technique 2299500100048
(GSPEC) 2299500100049
INC-SOURCE (P-LI7) A metallic Li-7 target of different Li-7 layer 2299500100050
thicknesses with protons of different energies above 2299500100051
the (P,N) reaction threshold. 2299500100052
INC-SPECT Spectrum at the place of the sample is determined 2299500100053
by averaging of the down- and upstream gold monitor 2299500100054
samples. 2299500100055
Neutron fluxes between 1.E+7 - 1.E+9 1/cm**2/s . 2299500100056
DETECTOR (HPGE) A High-purity germanium detector with a relative2299500100057
efficiency of 100%. The detector efficiency was 2299500100058
determined with a set of calibration sources and via 2299500100059
the 13-Al-27(P,G)14-Si-28 reaction. 2299500100060
CORRECTION Correction for dead time of about factor of three (!) 2299500100061
MONITOR (79-AU-197(N,G)79-AU-198-G,,SIG,,MXW) 2299500100062
(13-AL-27(P,G)14-SI-28,,SIG) For detector calibration 2299500100063
SAMPLE C-14 mass was determined with the help of its BETA- 2299500100064
activity and is 283 +- 3 mg. The sample was 2299500100065
sandwiched between two thin gold foils. 2299500100066
ERR-ANALYS (ERR-T) Total error equal to quadratic sum of its 2299500100067
constituents 2299500100068
(ERR-S,2.,8.) Error of counting statistics 2.-8.%. 2299500100069
(ERR-1) Error due to the gamma detector efficiency 2299500100070
(ERR-2,2.,10.) error of the negutron flux determination2299500100071
* all other uncertainties are smaller than 2%. 2299500100072
HISTORY (20080214C) SM 2299500100073
(20081222A) M.M. Reference 2007CERN,223 was added. 2299500100074
Reference (J,AJ,387,258,1992) was moved in REL-REF 2299500100075
lines (previous activation result). 2299500100076
ERR-ANALYS was corrected, ERR-S, ERR-2, ERR-3 were 2299500100077
deleted from COMMON as min/max errors. 2299500100078
(20101105A) SD: ERR-ANALYS corrected: min/max errors 2299500100079
are shown in description. 2299500100080
(20170825U) SD: Syntax of 2006CERN ref. corrected. 2299500100081
(20211103A) SD: Corrections in all Subents. 2299500100082
Subent 004 added. 2299500100083
ENDBIB 81 0 2299500100084
COMMON 1 3 2299500100085
ERR-1 2299500100086
PER-CENT 2299500100087
5. 2299500100088
ENDCOMMON 3 0 2299500100089
ENDSUBENT 88 0 2299500199999
SUBENT 22995002 20211103 23052299500200001
BIB 9 13 2299500200002
REACTION (6-C-14(N,G)6-C-15,,SIG,,MXW) 2299500200003
INC-SOURCE Li-7 target thickness is 30 u-m, proton energy is 2299500200004
1912 keV, 30 keV above Li-7(p,n) reaction threshold 2299500200005
INC-SPECT Spectrum can be approximated by Maxwellian with 2299500200006
temperature kT = 23.3 keV 2299500200007
DECAY-MON (79-AU-198-G,2.694D,DG,411.8,0.9552) 2299500200008
MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 2299500200009
ERR-ANALYS (MONIT-ERR) Uncertainty in monitor reaction 2299500200010
COMMENT Note that in this case the neutron energy is 2299500200011
given in the center-of-mass system 2299500200012
STATUS (TABLE) Table V of Phys.Rev.,C77(2008)015804 2299500200013
(SPSDD,22995004) Renormalized. 2299500200014
HISTORY (20211103A) SD: MONIT/ERR added. Subent superseded. 2299500200015
ENDBIB 13 0 2299500200016
COMMON 3 3 2299500200017
KT-NRM MONIT MONIT-ERR 2299500200018
KEV MB MB 2299500200019
25. 586. 8. 2299500200020
ENDCOMMON 3 0 2299500200021
DATA 4 1 2299500200022
KT DATA ERR-T ERR-T 2299500200023
KEV MICRO-B MICRO-B PER-CENT 2299500200024
23.3 7.1 0.5 6.7 2299500200025
ENDDATA 3 0 2299500200026
ENDSUBENT 25 0 2299500299999
SUBENT 22995003 20211103 23052299500300001
BIB 9 15 2299500300002
REACTION (6-C-14(N,G)6-C-15,,SIG,,SPA) 2299500300003
INC-SOURCE Li-7 target thickness is 5 mu-m, proton energies are 2299500300004
2001 - 2530 keV, above Li-7(p,n) reaction threshold 2299500300005
INC-SPECT Unsymmetric broad neutron spectrum with resolution 2299500300006
taken by compiler from Fig.3 of main reference. 2299500300007
Spectra are typical for mono-energetic experiment with2299500300008
wide energy uncertainty (for 150 and 500 keV). 2299500300009
DECAY-MON (79-AU-198-G,2.694D,DG,411.8,0.9552) 2299500300010
MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 2299500300011
MISC-COL (MISC) Proton energy 2299500300012
ERR-ANALYS (ERR-SYS) Systematic error 2299500300013
STATUS (TABLE) Table V of Phys.Rev.,C77(2008)015804 2299500300014
(CURVE) Spectrum width EN-RSL-FW taken from the 2299500300015
curves Fig.3, #2-#3-#4 from above 2299500300016
HISTORY (20211103U) SD: MONIT-REF added from Subent 001. 2299500300017
ENDBIB 15 0 2299500300018
NOCOMMON 0 0 2299500300019
DATA 7 3 2299500300020
EN-MEAN EN-RSL-FW DATA ERR-T ERR-T ERR-SYS 2299500300021
MISC 2299500300022
KEV KEV MICRO-B MICRO-B PER-CENT PER-CENT 2299500300023
KEV 2299500300024
150. 9. E+01 10.7 1.2 11. 2299500300025
2001. 2299500300026
500. 1.3 E+02 17.0 1.5 8.8 2299500300027
2291. 2299500300028
750. 1.5 E+02 15.8 1.6 10. 5. 2299500300029
2530. 2299500300030
ENDDATA 10 0 2299500300031
ENDSUBENT 30 0 2299500399999
SUBENT 22995004 20211103 23052299500400001
BIB 10 16 2299500400002
REACTION 1((6-C-14(N,G)6-C-15,,SIG,,MXW)/ 2299500400003
(79-AU-197(N,G)79-AU-198,,SIG,,SPA)) 2299500400004
2(6-C-14(N,G)6-C-15,,SIG,,MXW) 2299500400005
INC-SOURCE Li-7 target thickness is 30 mu-m, proton energy is 2299500400006
1912 keV, 30 keV above Li-7(p,n) reaction threshold 2299500400007
INC-SPECT Spectrum can be approximated by Maxwellian with 2299500400008
temperature kT = 23.3 keV 2299500400009
DECAY-MON (79-AU-198-G,3881.0MIN,DG,411.80,0.9558) 2299500400010
MONIT-REF (,R.Reifarth+,J,EPJ/P,133,424,2018) 2299500400011
ANALYSIS Cross section value in Subent 22995.002 is 2299500400012
renormalized for new gold cross section 2299500400013
CORRECTION Correction for revised gold standard: 622.7/586 =1.0622299500400014
COMMENT Note that in this case the neutron energy is 2299500400015
given in the center-of-mass system 2299500400016
STATUS (TABLE) Table from p.256 of INDC(GER)-0053 2299500400017
HISTORY (20211103C) SD 2299500400018
ENDBIB 16 0 2299500400019
NOCOMMON 0 0 2299500400020
DATA 6 1 2299500400021
KT DATA 1ERR-T 1DATA 2ERR-T 2ERR-T 22299500400022
KEV NO-DIM NO-DIM MICRO-B MICRO-B PER-CENT 2299500400023
23.3 0.122E-04 0.008E-04 7.5 0.5 6.6 2299500400024
ENDDATA 3 0 2299500400025
ENDSUBENT 24 0 2299500499999
ENDENTRY 4 0 2299599999999